/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package bus.com;

import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.MotionEvent;
import android.gesture.GestureOverlayView;
import android.gesture.Gesture;
import android.gesture.GestureLibrary;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import bus.com.R;

import java.io.File;

public class CreateGestureActivity extends Activity {
    private static final float LENGTH_THRESHOLD = 120.0f;

    private Gesture mGesture;
    private View mDoneButton;
    private Button mDiscardButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        setContentView(R.layout.gesture_create);

        mDoneButton = findViewById(R.id.done);
        mDiscardButton = (Button) findViewById(R.id.discard);
        
       
        //Spinner spinner = (Spinner) findViewById(R.id.spinner);
        //ArrayAdapter<CharSequence> adapter 
        //	= ArrayAdapter.createFromResource(this
        //		, array.gestures_names
        //		, android.R.layout.simple_spinner_item);
        
        //adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        //spinner.setAdapter(adapter);
        
        
        GestureOverlayView overlay = (GestureOverlayView) findViewById(R.id.gestures_overlay);
        overlay.addOnGestureListener(new GesturesProcessor());
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        
        if (mGesture != null) {
            outState.putParcelable("gesture", mGesture);
        }
    }

    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        super.onRestoreInstanceState(savedInstanceState);
        
        mGesture = savedInstanceState.getParcelable("gesture");
        if (mGesture != null) {
            final GestureOverlayView overlay =
                    (GestureOverlayView) findViewById(R.id.gestures_overlay);
            overlay.post(new Runnable() {
                public void run() {
                    overlay.setGesture(mGesture);
                }
            });

            mDoneButton.setEnabled(true);
        }
    }

    public void addGesture(View v) {
    	
    		if (mGesture != null) {
                final TextView input = (TextView) findViewById(R.id.gesture_name);
                final CharSequence name = input.getText();
                if (name.length() == 0) {
                    input.setError(getString(R.string.error_missing_name));
                    return;
                }

                final GestureLibrary store = GestureBuilderActivity.getStore();
                store.addGesture(name.toString(), mGesture);
                store.save();

                setResult(RESULT_OK);

                final String path = new File(Environment.getExternalStorageDirectory(),
                        "gestures").getAbsolutePath();
                Toast.makeText(this, getString(R.string.save_success, path), Toast.LENGTH_LONG).show();
            } else {
                setResult(RESULT_CANCELED);
            }
    		finish();
    }
    
    public void cancelGesture(View v) {
        if (mDiscardButton.getText() == getString(R.string.button_discard_2)) {
    		mGesture = null;
    		final GestureOverlayView overlay =
                (GestureOverlayView) findViewById(R.id.gestures_overlay);
	        overlay.post(new Runnable() {
	            public void run() {
	                overlay.clear(false);
	            }
	        });
	        //overlay.
    		mDiscardButton.setText(R.string.button_discard);
        } else {
        	setResult(RESULT_CANCELED);
        	finish();
        }
    }
    
    private class GesturesProcessor implements GestureOverlayView.OnGestureListener {
        public void onGestureStarted(GestureOverlayView overlay, MotionEvent event) {
            mDoneButton.setEnabled(false);
            mGesture = null;
        }

        public void onGesture(GestureOverlayView overlay, MotionEvent event) {
        }

        public void onGestureEnded(GestureOverlayView overlay, MotionEvent event) {
            mGesture = overlay.getGesture();
            if (mGesture.getLength() < LENGTH_THRESHOLD) {
                overlay.clear(false);
            }
            mDiscardButton.setText(R.string.button_discard_2);
            mDoneButton.setEnabled(true);
        }

        public void onGestureCancelled(GestureOverlayView overlay, MotionEvent event) {
        }
    }
}
